Table 2 Univariable and multivariable analysis of determining factors grouped by blocks and levels with WPPSI-R cognitive scores.
From: Determinants of cognitive function in childhood: A cohort study in a middle income context
Blocks And Variables | Univariable analysis | Multivariable analysis (by block) | ||
|---|---|---|---|---|
R2 adjusted (%) | βu (95% CI) | R2 adjusted (%) | βk (95% CI) | |
Level 1 Socioeconomic status | ||||
Material Resources (Block 1) | 17.0 | |||
Family purchasing power | 15.5 | |||
Low | ||||
Regular | 5.51 (2.15; 8.88) | 4.4 (0.9; 7.8) | ||
Good | 16.0 (12.0; 20.0)* | 13.7 (9.3; 18.0)* | ||
Family income | 7.7 | |||
≤ 1 minimum wage | ||||
More than 1 minimum wage | 7.9 (5.0; 10.8)* | 4.0 (1.0; 7.0) | ||
Father without income | 2.6 | |||
None | ||||
Any | 5.3 (2.0; 8.6) | |||
Family Status (Block 2) | 9.7 | |||
Mother's schooling | 7.5 | |||
none or ≤ 5 years | ||||
> 5 years | 8.3 (5.2; 11.4)* | 8.2 (5.1; 11.3)* | ||
Father-child contact | 3.0 | |||
None | ||||
Some | 6.5 (2.5; 10.5)* | 5.9 (2.1; 9.8)* | ||
Family structure | 1.5 | |||
non-nuclear | ||||
Nuclear family | 03.4 (0.5; 6.3)* | |||
Religion | 0.3 | |||
Catholic | ||||
other beliefs | -1.6 (-4.6; 1.3) | |||
CIDI mood disorders among carers (2001)** | 0.0 | -1.9 (-3.6; 3.2) | ||
Level 2 Physical Environment and Psychosocial Stimulation | ||||
Sanitary conditions (Block 3) | ||||
Household | 12.7 | 15.3 | ||
Very poor | ||||
Poor | 4.9 (1.4; 8.5) | 3.7 (0.2; 7.3) | ||
Good | 13.6 (9.7; 17.5)* | 11.2 (7.1; 15.3)* | ||
Neighbourhood | 7.8 | |||
Bad | ||||
Regular | 5.8 (1.9;9.6) | 4.6 (0.8; 8.3) | ||
Good | 10.7 (6.9; 14.5)* | 7.0 (3.1; 10.9)* | ||
Psychosocial Stimulation (Block 4) | ||||
HOME score (1999) | 16.3 | 0.9 (0.7; 1.2)* | 23.7 | 0.8 (0.6; 1.0)* |
Nursery school attendance | 12.3 | |||
Never attended | ||||
Attended at some time | 12.2 (8.7; 15.7)* | 9.8 (6.5; 13.0)* | ||
Level 3 Child characteristics and health | ||||
Child's Characteristics (Block 5) | ||||
Birth order | 2.9 | 2.3 | ||
Third or subsequent | ||||
First or second | 5.0 (1.9; 8.2)* | 5.0 (1.9; 8.2)* | ||
Sex | 00 | |||
Female | ||||
Male | -0.4 (-3.3; 2.4) | |||
Age | 1.1 | |||
Up to 59.68 months | ||||
More than 59.68 months | -2.9 (-5.9; -0.04) | |||
Nutrition And Infection (Block 6) | 9.8 | |||
Birth weight | 2.8 | |||
≤ 2500 g | ||||
More than 2500 g | 6.5 (2.4; 10.6)* | 4.8 (0.8; 8.8)* | ||
Height-for-age (1998) | 3.9 | |||
≤ -2 Z scores | ||||
> -2 Z scores | 5.3 (2.5; 8.2)* | 5.3 (1.8; 8.8)* | ||
Weight-for-height (1998) | 1.5 | |||
≤ -2 Z scores | ||||
> -2 Z scores | 3.6 (0.5; 6.6)* | |||
Weight-for-age (1998) | 2.8 | |||
≤ -2 Z scores | ||||
> -2 Z scores | 4.2 (1.6; 6.9)* | |||
Diarrhoea prevalence (1997–1999) | 1.2 | |||
more than 6 days/year | ||||
0–6 days/year | 4.1 (0.1; 8.1)* | |||
Number of intestinal parasitic infection | 6.2 | -4.6 (-6.5; -2.7)* | -4.0 (-5.8; -2.2)* | |